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author | Alan Stern <stern@rowland.harvard.edu> | 2007-02-20 20:02:44 (GMT) |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-02-23 23:03:46 (GMT) |
commit | dfa87c824a9a5430008acd1ed2e8111ed164fcbe (patch) | |
tree | 1e25c9d6a00b409e3cd6a7d304fe2b98eb955309 /fs/sysfs/file.c | |
parent | b5e795f8df42936590ba9c606edc715fe3593284 (diff) | |
download | linux-fsl-qoriq-dfa87c824a9a5430008acd1ed2e8111ed164fcbe.tar.xz |
sysfs: allow attributes to be added to groups
This patch (as860) adds two new sysfs routines:
sysfs_add_file_to_group() and sysfs_remove_file_from_group().
A later patch adds code that uses the new routines.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Maneesh Soni <maneesh@in.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/sysfs/file.c')
-rw-r--r-- | fs/sysfs/file.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c index 98b0910..8d4d839 100644 --- a/fs/sysfs/file.c +++ b/fs/sysfs/file.c @@ -502,6 +502,30 @@ int sysfs_create_file(struct kobject * kobj, const struct attribute * attr) /** + * sysfs_add_file_to_group - add an attribute file to a pre-existing group. + * @kobj: object we're acting for. + * @attr: attribute descriptor. + * @group: group name. + */ +int sysfs_add_file_to_group(struct kobject *kobj, + const struct attribute *attr, const char *group) +{ + struct dentry *dir; + int error; + + dir = lookup_one_len(group, kobj->dentry, strlen(group)); + if (IS_ERR(dir)) + error = PTR_ERR(dir); + else { + error = sysfs_add_file(dir, attr, SYSFS_KOBJ_ATTR); + dput(dir); + } + return error; +} +EXPORT_SYMBOL_GPL(sysfs_add_file_to_group); + + +/** * sysfs_update_file - update the modified timestamp on an object attribute. * @kobj: object we're acting for. * @attr: attribute descriptor. @@ -586,6 +610,26 @@ void sysfs_remove_file(struct kobject * kobj, const struct attribute * attr) } +/** + * sysfs_remove_file_from_group - remove an attribute file from a group. + * @kobj: object we're acting for. + * @attr: attribute descriptor. + * @group: group name. + */ +void sysfs_remove_file_from_group(struct kobject *kobj, + const struct attribute *attr, const char *group) +{ + struct dentry *dir; + + dir = lookup_one_len(group, kobj->dentry, strlen(group)); + if (!IS_ERR(dir)) { + sysfs_hash_and_remove(dir, attr->name); + dput(dir); + } +} +EXPORT_SYMBOL_GPL(sysfs_remove_file_from_group); + + EXPORT_SYMBOL_GPL(sysfs_create_file); EXPORT_SYMBOL_GPL(sysfs_remove_file); EXPORT_SYMBOL_GPL(sysfs_update_file); |